Vent frame



FIG. 1 is a rear plan view thereof;

FIG. 2 is a side perspective view thereof;

FIG. 3 is a side perspective view thereof;

FIG. 4 is a rear perspective view thereof;

FIG. 5 is a front plan view thereof;

FIG. 6 is a side elevation view thereof; and,

FIG. 7 is a front perspective view thereof.

CLAIM The ornamental design for a vent frame, as shown and described.